Kühn Dipl. Ing. M, Milstrey U. Medium-Sized Cities as Peripheral Centers: Cooperation, Competition and Hierarchy in Shrinking Regions. RuR [Internet]. 2015 Jun. 30 [cited 2026 Aug. 15];73(3):185–202. Available from: https://rur.oekom.de/index.php/rur/article/view/581